Low-Temperature Conversions of Complex Solid Precursors in Ionic Liquids: New Compounds and Insights into Reaction Principles

在之前的资助期间，我们已经证明了合成和光谱技术的结合对于评价离子液体(ILS)的反应机理是非常有价值的。因此，我们将在第二个资助期内继续德累斯顿理工大学Ruck小组(无机化学)和Brunner小组(分析化学)的成功联合研究，并专注于对ILS中的反应进行现场监测，并利用先进的固态核磁共振光谱对反应产物进行深入表征。特别重要的是以下问题：IL动员的起始材料是什么？动员或解散是如何启动的？支持试剂的作用是什么，例如ILS中的Lewis酸或酸性杂质？大众运输是如何进行的？如何在原子/分子尺度上开始产品的形成？它是如何发展到最终产物粒子的形成的？这一结果将有助于在原子/分子尺度上更深入地理解离子热合成，并允许确定关键影响反应的参数。这应该允许一个更有针对性的方法，并使我们能够有选择地和高产率地进行材料合成。特别是，我们的目标是开发一种(至少是粗略的)通用策略，适用于合成过渡金属和ILS中第13至16族元素的二元化合物。

In the previous funding period, we have demonstrated that the combination of synthetic and spectroscopic techniques is extremely valuable for the evaluation of reaction mechanisms in ionic liquids (ILs). We will therefore continue the successful joint research of the Ruck group (Inorganic Chemistry) and the Brunner group (Analytical Chemistry) at TU Dresden in the second funding period and focus on the in-situ monitoring of reactions in ILs and the in-depth characterization of reaction products by advanced solid-state NMR spectroscopy. Of special importance are the following questions: Which starting material is mobilized by the IL? How is the mobilization or dissolution initiated? What is the role of supporting agents, such as Lewis acids or acidic impurities in the ILs? How does the mass transport proceed? How does product formation start at the atomic/molecular scale? How does it progress to the formation of the final product particles?The results will contribute to a deeper understanding of the ionothermal syntheses at the atomic/molecular scale and allow the determination of parameters that crucially influence the reactions. This should allow for a more targeted approach and enable us to perform materials synthesis selectively and with high yields. In particular, we are aiming to develop a (at least crude) general strategy that is applicable for the synthesis of binary compounds of transition metals and elements of the groups 13 to 16 in ILs.